7-9
Chapter 7 EPS with IDNet 2
Troubleshooting (continued)
Trouble Messages Table 7-7 explains the EPS trouble messages that may appear on the FACP display.
Table 7-7. EPS Trouble Messages
Message Definition
AC Fail AC power is not present or is too low for proper system operation
Low Battery The battery voltage is below the 24 V nominal level by 10% or more.
Depleted/Missing
Battery
The battery is either below 20 V or completely undetected.
Card Overcurrent The EPS is drawing more current than it should. Check for faults on the
circuit.
Charger The battery charger is either defective or being heavily loaded by
batteries. Read charger current at front panel, if charger current is
approximately 3 A, batteries are likely loading the charger. Remove
battery connection and measure the output of the EPS. If the output is
27.6 (or close, temperature dependent), there is a possibility of
depleted batteries or a bad set of batteries. Allow batteries to charge or
replace them if they do not take a charge.
Extra Device Appears if one or more extra devices (i.e., devices that have not been
configured for the IDNAC channel) are one the system. Only one
message appears, regardless of the number of extra devices found.
Earth Fault Search Comes up during the Earth Fault Search diagnostic function. Once the
search is initiated, the front panel display indicates how far along the
search process has progressed (10%, 25%…75%), and then shows the
results of the search. The result either identifies the offending circuit or
indicates that the earth fault could not be found. EPS circuits (IDNet,
IDNAC, and aux power) are searched. System alarm and trouble
processing is suspended during the search.
Short Circuit Appears when a short is detected on the IDNAC channel. This status
clears automatically when the short circuit is removed.
Channel Fail Appears when each device on the IDNet channel has been configured,
and when none of the devices are communicating on the channel. This
message does not appear if there are no configured devices on the
IDNAC channel.
To Next Page
Loading...
Need help?
General
